Stop marking your fabric and instead use a Seams Sew Easy Seam Guide. The Seams Sew Easy Seam Guide temporarily adheres to any sewing machine to achieve perfect 1/4" seams. Also included on the Seams Sew Easy Seam Guide are 1/2" grid lines for hemming or to create larger seam allowances. Use the grid lines to help ensure that the guide is in the correct spot when sticking it on your sewing machine. For easy placement the Seam Sew Easy Seam Guide is made of a sturdy, see-through plastic.